<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item><a href="#">用户管理</a></el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
           <!-- 搜索与添加区域 -->
           <el-row :gutter="20">
               <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="quertInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
               </el-col>
               <el-col :span="4">
                   <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
               </el-col>
           </el-row>

           <!-- 用户列表区域 -->
           <el-table :data="userlist" border stripe>
               <el-table-column type="index" label="#"></el-table-column>
               <el-table-column label="姓名" prop="username"></el-table-column>
               <el-table-column label="邮箱" prop="email"></el-table-column>
               <el-table-column label="电话" prop="mobile"></el-table-column>
               <el-table-column label="角色" prop="role_name"></el-table-column>
               <el-table-column label="状态">
                   <template v-slot="scope">
                       <!-- {{scope.row}} -->
                       <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
                   </template>
               </el-table-column>
               <el-table-column label="操作" width="180px">
                   <template v-slot="scope">
                       <!-- 修改按钮 -->
                       <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.id)"></el-button>
                       <!-- 删除按钮 -->
                       <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeUserById(scope.row.id)"></el-button>
                       <!-- 分配角色按钮 -->
                       <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                        <el-button type="warning" size="mini" icon="el-icon-setting" @click="setRole(scope.row)"></el-button>
                       </el-tooltip>
                   </template>
               </el-table-column>
           </el-table>

           <!-- 分页区域 -->
        <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="quertInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="quertInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
        </el-pagination>
            <!-- layout决定组件的内容显示 -->
        </el-card>
        
        <!-- 添加用户的对话框 -->
        <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="50%" @close="addDialogClose">
            <!-- 内容主体区域 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px" status-icon>
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机号" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser" >确 定</el-button>
            </span>
        </el-dialog>

<!-- 修改用户的对话框 -->
       <el-dialog
            title="修改用户信息"
            :visible.sync="editDialogVisible"
            width="50%" @close="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px" status-icon>
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机号" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="ediitUserInfo">确 定</el-button>
            </span>
        </el-dialog>    
<!-- 分配角色的对话框 -->
        <el-dialog
            title="分配角色"
            :visible.sync="setRoleDialogVisible"
            width="50%" @close="setRoleDialogClosed">
            <div>
                <p>当前的用户：{{userInfo.username}}</p>
                <p>当前的角色：{{userInfo.role_name}}</p>
                <p>分配新角色：
                    <el-select v-model="selectdRoleId" placeholder="请选择">
                        <el-option
                        v-for="item in rolesList"
                        :key="item.id"
                        :label="item.roleName"
                        :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data() {
        // 验证手机号的规则
        var checkMobile = (rule,value,cb) => {
            // 验证手机号的正则表达式
            const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;
            if(regMobile.test(value)) {
                return cb()
            }
            cb(new Error('请输入合法的手机号'))
        }
        return {
            // 获取用户列表的参数对象
            quertInfo:{
                query:'',
                pagenum:1,//当前页数
                pagesize:5//当前每页显示多少数据
            },
            userlist:[],
            total:0,
            // 控制添加用户的对话框的显示与隐藏
            addDialogVisible:false,
            // 添加用户的数据表单
            addForm:{
                username:'',
                password:'',
                email:'',
                mobile:''
            },
            // 添加用户表单验证规则对象
            addFormRules:{
                username:[
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    { min: 3, max: 10, message: '用户名长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                password:[
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '密码长度在 6 到 15 个字符', trigger: 'blur' }
                ],
                email:[
                    { required: true, message: '请输入邮箱地址', trigger: 'blur' },
                    { type: 'email', message: '请输入正确的邮箱地址', trigger: 'blur' }
                ],
                mobile:[
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
            },
            // 控制修改用户的对话框的显示与隐藏
            editDialogVisible:false,
            // 查询到的用户信息对象
            editForm:{},
            // 修改用户表单验证规则对象
            editFormRules:{
                email:[
                    { required: true, message: '请输入邮箱地址', trigger: 'blur' },
                    { type: 'email', message: '请输入正确的邮箱地址', trigger: 'blur' }
                ],
                mobile:[
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
            },
            // 控制分配角色对话框的显示\隐藏
            setRoleDialogVisible:false,
            // 需要被分配角色的用户信息
            userInfo:{},
            // 所有角色的数据列表
            rolesList:[],
            // 已选中的角色id值
            selectdRoleId:''
        }
    },
    created(){
        this.getUserList()
    },
    methods: {
        async getUserList(){
            const {data:res} = await this.$http.get('users',{ 
                params:this.quertInfo 
            })
            if(res.meta.status !== 200) {
                return this.$message.error('获取用户列表失败')
            }
            this.userlist = res.data.users;
            this.total = res.data.total;
            // console.log(res)
        },
        // 监听pagesize 改变得事件
        handleSizeChange(newSize){
            // console.log(newSize)
            this.quertInfo.pagesize = newSize;
            this.getUserList()
        },
        // 监听 页码值 改变的事件
        handleCurrentChange(newPage){
            // console.log(newPage)
            this.quertInfo.pagenum = newPage;
            this.getUserList()
        },
        // 监听switch开关状态的变化
        async userStateChanged(userinfo){
            // console.log(userinfo)
            const {data:res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            // console.log(res)
            if(res.meta.status !== 200) {
                userinfo.mg_state = !userinfo.mg_state;
                return this.$message.error('更新用户状态失败')
            }
            this.$message.success('更新用户状态成功')
        },
        // 监听添加用户对话框的关闭事件
        addDialogClose(){
            this.$refs.addFormRef.resetFields()
        },
        // 添加新用户
        addUser(){
            this.$refs.addFormRef.validate(async (valid) => {
                if (!valid) return
                // 可以发起添加用户的网络请求
                const {data:res} = await this.$http.post('users',this.addForm)
                if(res.meta.status!==201) this.$message.error('添加用户失败!')
                this.$message.success('添加用户成功!')
                // 关闭添加用户框
                this.addDialogVisible = false

                // 重新获取用户列表数据
                this.getUserList()
            })
        },
        // 展示修改用户信息的对话框
        async showEditDialog(id){
            // console.log(id)
            const {data:res} = await this.$http.get('users/' + id)
            if(res.meta.status !== 200){
                return this.$message.error('查询用户信息失败！')
            }

            this.editForm = res.data
            this.editDialogVisible = true
        },
        // 监听修改用户对话框的关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        // 提交修改后的信息
        ediitUserInfo(){
            this.$refs.editFormRef.validate(async valid=> {
                // 
                if(!valid)return
                // 发起修改用户信息的数据请求
                const {data:res} = await this.$http.put('users/' + this.editForm.id,{email:this.editForm.email,
                mobile:this.editForm.mobile})
                if(res.meta.status !== 200) {
                    return this.$message.error('更新用户信息失败！')
                }

                // 关闭对话框
                this.editDialogVisible = false
                // 刷新数据列表
                this.getUserList()
                // 提示修改成功
                this.$message.success('更新用户信息成功！')
            })
        },
        // 根据ID删除对应的用户信息
        async removeUserById(id){
            // console.log(id)
            // 弹框询问用户是否删除数据
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => {
                return err
            })
            // console.log(confirmResult)
            // 确认删除返回字符串confirm
            // 取消删除返回字符串cancel

            if(confirmResult !== 'confirm'){
                return this.$message.info('已经取消删除！')
            }

            const {data:res} = await this.$http.delete('users/' + id)
            if(res.meta.status !== 200){
                return this.$message.error('删除用户失败!')
            }
            this.$message.success('删除用户成功!')
            this.getUserList()
        },
        // 展示分配角色的对话框
        async setRole(userInfo){
            this.userInfo = userInfo
            // 在展示对话框之前，获取角色列表
            const {data:res} = await this.$http.get('roles')
            if(res.meta.status !== 200){
                return this.$message.error('获取角色列表失败！')
            }

            this.rolesList = res.data

            this.setRoleDialogVisible = true
        },
        // 点击按钮分配角色
        async saveRoleInfo(){
            if(!this.selectdRoleId){
                return this.$message.error('请选择要分配的角色！')
            }
            // console.log(this.selectdRoleId)
            const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectdRoleId})
            if(res.meta.status !== 200){
                return this.$message.error('更新角色失败！')
            }
            // console.log(res.data)
            this.$message.success('更新角色成功！')
            this.getUserList()
            this.setRoleDialogVisible = false
        },
        //监听分配角色对话框的关闭事件
        setRoleDialogClosed(){
            this.selectdRoleId = ''
            this.userInfo = {}
        }
    },
}
</script>

<style lang="less" scoped>

</style>